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9% of global electricity is generated from Nuclear

8.68 % Share of global electricity
12 gCO2eq/kWh Carbon Intensity
Nuclear

Nuclear energy is a form of low-carbon energy that harnesses the power released by atomic reactions, typically through the process of nuclear fission. In nuclear power plants, the nuclei of heavy atoms, such as uranium-235, are split into smaller parts when they absorb a neutron, releasing a significant amount of energy. This energy is released in the form of heat, which is used to produce steam that drives turbines connected to electricity generators. Nuclear energy is an important part of the global push for cleaner electricity, helping to reduce reliance on fossil fuels that contribute to climate change and air pollution.

The process of generating electricity in a nuclear power plant begins with the enrichment of uranium to increase the percentage of uranium-235. This enriched uranium serves as fuel in the reactor core, where controlled fission reactions occur. The heat produced from these nuclear reactions is used to convert water into steam. This high-pressure steam is then used to spin turbines, which drive the generators that produce electricity. This method of electricity generation is highly efficient and can provide a steady and reliable energy supply, making nuclear power a critical component in the global energy mix.

One of the primary advantages of nuclear energy is its very low carbon intensity. With a carbon intensity of only 12 gCO2eq/kWh, nuclear power has emissions comparable to other low-carbon sources like wind (11 gCO2eq/kWh) and solar (45 gCO2eq/kWh). This makes nuclear energy an attractive option for reducing overall carbon emissions, especially when compared to fossil fuels such as coal and natural gas, which have carbon intensities of 820 and 490 gCO2eq/kWh, respectively. By harnessing such clean energy sources, countries can significantly cut down their carbon footprints and contribute to the global effort to combat climate change.

Nuclear energy contributes substantially to the global electricity supply, accounting for more than 8% of worldwide electricity consumption. Some regions have embraced nuclear power even more extensively. For example, in South Carolina and New Hampshire, more than half of their electricity is generated from nuclear power. Meanwhile, in Alabama, nuclear energy provides almost a third of the state's electricity needs. Illinois also benefits significantly, with nuclear providing around half of its electricity. In Finland, nuclear delivers 38% of the electricity supply. These examples highlight nuclear energy's significant role in achieving clean energy goals and ensuring a stable energy supply.

Besides its low carbon footprint, nuclear energy offers the advantage of providing a continuous and stable power supply. Unlike some other clean energy sources that depend on weather conditions, nuclear power plants operate consistently, regardless of external environmental factors. This makes nuclear an invaluable player in maintaining energy balance, especially in regions that may not have favorable conditions for solar or wind power. As the world moves towards increased electrification to support growing demands from societal advancements and technologies like AI, the role of nuclear power becomes even more critical.

Expanding nuclear and solar energy presents a clear path toward a sustainable future. Solar energy, despite slightly higher carbon intensity than wind and nuclear, plays an essential role in the clean energy landscape. Together with wind, these technologies form the backbone of a low-carbon electricity system, ensuring reliable and environmentally friendly power solutions. The move towards more extensive use of nuclear and solar electricity generation is vital in our pursuit of an energy system that supports both human wellbeing and environmental integrity while fostering continuous economic growth. Embracing these clean technology solutions is a win for our planet, economies, and future generations.

Country/Region kWh/person % TWh
South Carolina 10032.8 W 53.4% 55.8 TWh
Alabama 8234.7 W 30.0% 42.7 TWh
New Hampshire 7702.0 W 54.1% 10.9 TWh
Illinois 7697.6 W 49.7% 97.2 TWh
Finland 5955.9 W 38.1% 33.5 TWh
Pennsylvania 5748.5 W 30.3% 75.1 TWh
France 5678.0 W 67.4% 379.3 TWh
Arkansas 4773.1 W 21.8% 14.8 TWh
Tennessee 4642.5 W 28.9% 33.9 TWh
Connecticut 4525.2 W 36.3% 16.7 TWh
Georgia (US) 4511.2 W 30.2% 50.9 TWh
Arizona 4046.2 W 25.3% 31.1 TWh
Sweden 3990.3 W 25.6% 42.7 TWh
North Carolina 3813.8 W 27.5% 42.7 TWh
Louisiana 3609.4 W 15.3% 16.5 TWh
Mississippi 3464.8 W 13.2% 10.2 TWh
Nebraska 3445.9 W 16.6% 6.9 TWh
Slovakia 3319.1 W 65.4% 18.4 TWh
Virginia 3271.5 W 18.0% 28.9 TWh
South Korea 3184.2 W 26.2% 164.8 TWh
Kansas 3120.7 W 14.6% 9.3 TWh
United Arab Emirates 3032.3 W 19.6% 32.3 TWh
New Jersey 2900.0 W 32.6% 27.6 TWh
Czechia 2734.9 W 41.9% 29.7 TWh
Michigan 2690.9 W 21.4% 27.3 TWh
Slovenia 2590.3 W 40.2% 5.5 TWh
Maryland 2377.4 W 22.2% 14.9 TWh
United States 2269.5 W 17.0% 784.9 TWh
Minnesota 2225.4 W 17.8% 12.9 TWh
Bulgaria 2130.7 W 38.7% 14.3 TWh
Canada 2015.7 W 12.9% 80.6 TWh
Belarus 1868.3 W 37.7% 16.7 TWh
Switzerland 1801.3 W 24.1% 16.2 TWh
Wisconsin 1687.7 W 13.0% 10.1 TWh
Hungary 1536.5 W 31.7% 14.8 TWh
Russia 1523.3 W 19.1% 220.5 TWh
Ukraine 1512.1 W 54.6% 62.1 TWh
Ohio 1465.2 W 9.7% 17.4 TWh
New York 1420.3 W 17.2% 27.9 TWh
EU 1373.0 W 23.0% 619.4 TWh
Belgium 1349.6 W 20.0% 15.9 TWh
Texas 1303.4 W 6.9% 41.4 TWh
Florida 1262.0 W 10.4% 30.0 TWh
Missouri 1152.0 W 8.2% 7.2 TWh
Spain 1077.5 W 18.5% 51.9 TWh
Armenia 998.2 W 29.3% 2.9 TWh
Washington 960.8 W 7.0% 7.7 TWh
Japan 762.8 W 9.6% 94.0 TWh
Romania 507.8 W 19.0% 9.6 TWh
United Kingdom 481.5 W 11.0% 33.4 TWh
California 445.4 W 5.9% 17.5 TWh
People's Republic of China 334.9 W 4.5% 476.7 TWh
The World 327.3 W 8.7% 2694.1 TWh
Argentina 231.0 W 7.1% 10.6 TWh
Netherlands 206.0 W 2.8% 3.8 TWh
South Africa 156.9 W 4.4% 10.2 TWh
Pakistan 92.3 W 14.5% 23.7 TWh
Mexico 77.0 W 2.8% 10.1 TWh
Brazil 62.8 W 1.8% 13.4 TWh
India 35.7 W 2.6% 52.2 TWh
Republic of China (Taiwan) 17.1 W 0.1% 0.4 TWh
Sub-Saharan Africa 8.2 W 2.0% 10.1 TWh
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